While her latest album was deemed a flop by critics, Madonna proved she still had a massive fan base.

Her supporters eagerly flocked to the pop diva's concerts, to hear classic tunes such as Lucky Star and Like A Virgin.

Lady Gaga is said to be following in Madonna's footsteps, and while she ranked tenth on Forbes' rich list, the pop sensation's career seems to be heading in the same million-making direction as Madonna's.